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FOLEY AL—

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Foley HVAC

Foley, AL · 3 nodes · Heat pump system

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DELTA T (°F)

Control Signals

R—

Y—

S—

CC—

DT—

V—

O—

W—

Temperatures

SUPPLY DUCT—

RETURN DUCT—

BEDROOM—

AMBIENT (API)—

AMBIENT Δ—

Foley AL — Weather

HUMIDITY—

FEELS LIKE—

CONDITIONS—

WIND—

Diagnostics

DELTA T STATUS—

CYCLE TIME—

DEFROST—

MIN ΔT MET—

AIR HANDLER

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CONDENSER

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INSIDE SENSOR

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Customers

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Customer Details ✕

ACCOUNT ACTIONS

CHECKING...

Waiting for live data from your system...

Power Source

Transformer

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Connection Point

Wirenut #1

Flood Protection Switch

Float Switch · r

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Connection Point

Wirenut #2

Thermostat Power

R Terminal

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Thermostat

T-stat Logic

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Cooling Request Sent

Y Terminal (T-stat Out)

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Connection Point

Wirenut #3 · Air Handler

Connection Point

Wirenut #4 · Condenser Entry

Cooling Signal Received at Unit

Y Terminal · Logic Board · y

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Safety Check Passed

Safety Circuit · HPS / LPS / Thermal · s

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Compressor Switch

Contactor Coil · cc

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Return Path Connection

Wirenut #5 · Condenser Return

Return Path Connection

Wirenut #6 · Air Handler Return

Circuit Complete

Transformer Common · Return

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CYCLES

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AVG RUN TIME

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AVG PEAK Δ T

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BEST PEAK Δ T

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WORST PEAK Δ T

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AVG HEAT INDEX

TEMPERATURES OVER TIME

Supply · Return · Bedroom · Ambient (°F)

PEAK DELTA T PER CYCLE

Best temperature difference achieved each compressor run (°F) · Cycles under 5 min excluded

HEAT INDEX OVER TIME

Feels-like temperature accounting for humidity · Higher = system works harder (°F)

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VALID CYCLES

Clean cool-mode cycles with heat index data · defrost excluded

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R² — HEAT INDEX vs DELTA T

Strength of relationship between outdoor conditions and system performance · approaches 1.0 as formula converges

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BASELINE STATUS

BUILDING → PROVISIONAL → ESTABLISHED → STRONG → CONVERGED

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PERFORMANCE SLOPE (ΔT/°HI)

How much delta T drops per degree of heat index rise · negative = system works harder in heat

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SYSTEM EFFICIENCY INDEX

Current performance vs model baseline · 1.0 = exactly as expected · below 0.85 = investigate

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LIVE DELTA T

Current supply vs return temperature difference from live WebSocket data

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MODEL EXPECTED ΔT

What the formula predicts this unit should produce at current heat index conditions

NOT INSTALLED

CAPACITOR HEALTH ⓘ

CT clamp measurement · Xc=1/(2πfC) · trending reactive current ratio detects failing capacitors · single-phase required

PENDING

TREND FORECAST ⓘ

Projects days until SEI crosses service threshold · requires converged baseline + 14 days SEI history

HEAT INDEX vs DELTA T

Each dot = one compressor cycle · Line = performance envelope · Cool mode only

HEAT INDEX vs SUPPLY TEMP

Supply air temperature at peak delta T · Flat line = consistent delivery

R² CONVERGENCE — FORMULA BUILDING OVER TIME

Watch R² climb toward 1.0 as more cycles accumulate · Each point = regression recalculated on all cycles up to that point

MOCK DATA

START CAPACITOR HEALTH

Peak inrush current ratio · Sampled first 500ms after CC closes · CT clamp not installed — simulated data shown

MOCK DATA

RUN CAPACITOR HEALTH

Steady-state RMS current ratio · Sampled after 60s runtime · CT clamp not installed — simulated data shown

SAVED PERFORMANCE FORMULAS

Reset after a service call to start fresh accumulation